Hone driving machine



Nov. 4, 1952 J. F. SMOLE ET AL 2,616,225

HONE DRIVING MACHINE Filed April 29, 1947 5 Sheets-Sheet- 1 INVENTORS JACK F. SMOLE 40.561 11 E SMOLE ITTOB/VEYS Nov. 4, 1952 J. F. SMOLE EIAL 2,616,225

HONE DRIVING MACHINE Filed April 29, 1947 3 Sheets-Sheet 2 INVENTORJ JACK E 54401.5 JOSEPH F. SMOLE 1952 J. F. SMOLE ET AL 2,616,225

HONE DRIVING MACHINE Filed April 29, 1947 5 Sheets-Sheet 3 INVENTORJ JACK F." $114045 JOSEPH F. SMOLE A TTOBNE'YS Patented Nov. 4, 1952 UNITED STAT ES PATENT OFFICE HBNE DRIVING MACHINE .Ja ck -E. S-mole, Cleveland Heights, and v,loseph F. Smole, Cleveland, Ohio,-assigno.rs, by mesne assignments, to Lempco Products,,.lnc.,,Bedford,

ZOhio, a corporation of Ohio .ApplicationAprilrZS, 1947, SeriabNo. 744,692

3 Claims.

pres nt @inventio zreletes to hone drivi machines.

object ;of the invention is 1159 Provide a. machine for :driving :an expan sib le 1.1 0. 6. Which a i e as :.:D V I o man a l ad us in the effective diameter of the hope While the machine is in operation {and which can be manipulated to cause .tempoigary ,contractionrof the :honing tool-. to permit the piece-rte be honed to .be placed over and removed from the hone without working vcontact .with the latter and without disturbing :the manual adjustment of the hone diameter.

Other objects and tadvantagesofthe invention will :beapparent from the dollowing description of a preferred form .of .the .invention, reference being ad :t t a companyin draw n s wherein:

'Fig. 1 .is aside view partly section, of a hone driving machine, "the section being taken on .line 'l-l .of Fig.2;

"Fig. '2 is "an "end view of the 'ihone driving machine part of the machine being broken away to-show other parts;

Fig. 3 is a' view taken-along-line 3-3-of'-Fig. i;

Fig. 4 is 1 a side view: of the mechanism shown in .iFig. 3, .certain parts i being :shown in ."section;

:Eig. 5.is azrfragmentaryrfront view pfzthedrive shaft and-hone adjusting :sleeve of thezmaehine; and

Fig. 6 is a side view of the mechanism shown in.Fi g.:5.; and

.Fig. 7 is :apartial. sectional .view .of Fig... 5.

"Referring to the drawings, we have shown a machine Ill for driving honing tools for honing the inside of cylindrical surfaces. 'The machine "is particularly adapted .for driving honing tools that'may'pe adjusted as to their outside diameters whilethe-machine'is operating. The machine is also provided with manually operated *mechanism "for causing contraction "of the honing tool diameter to enable the piece beinghoned'to =be placed on'and *removed from the hone without 'workin-g engagement with it, and without "having to disturb the -adjusted working diameter of "the hone.

The machine lll consists'rof"ia*housingl1 'hav-' ing "a :platform "I? "supported therein thy the housing walls. A drive shaft il13 .is mounted in bearings 14 which are supported on the platform 12. The shaft l3 may .be driven .by any suitable mechanism, .and in vthe drawings we have .shown v.the shaft :driven .hy ,an electric motor t6 through aa Joel-t: drive mechamsm .that lwlude ee iackishaft. l-L havinemul evs;1l.-anc1 pulleys 9-;mounted'on shaft 13.. Abelt drives the tack shaft and a 1t -l in erconnects t e lack shaft with the pulleys IS. The pulley mechanism does not form ,a part of the present invention and the ldetails are not material here.

'fljhe pulleys ,lglare onzthe rear-ward end of the shaft L3 ,andtheiorward end-of the shaft projects from the housing .LI through an opening in the housing. and this end ,of .the shaft is provided with a socket (Fig. 4-) which .is threaded internally as at .26 to receive the threaded spindle of a honing tool 11 as may be seenin Fig. 4. The honing tool ,2! may ,Joesimilar to that of the ecupending application .of Jack Smole, serial Number $144,693, filed April 29, 1947, .for Honin 13001, new Patent .No. 2,596,961, May 13, 1952,, .andin general it includes a spindle havinghoning, stones carried thereon and mechanism for causing the stones to move inwardly and outwardly radially relative to the spindle.

The hone tool mechanism "comprises a collar 28 which -.when,mov.ed away from the forward end .of the shaft "licausesthe honing stones tobe moved .outwardlyradiallyto expand the diameter ofthehone; andvcomprises a spring -(not shown) to retract the honing stonesinwardly and move the .collar toward the end of the shaft It to contract 'the diameter of the hone. The collar 2.8 -may he .moved longitudinally of the tool spindle and .away from the end of the shaft as aforesaid bythe -end of a sleeve 3.0 which surrounds the drive shaft l3 and which forms a part of the machine 110. The sleeve will move the collar ;28 to ,expa nd thehone tool as itpis moved forwardly or to ,the left, as .viewed in Figs. 1 ,and i l, and will permit contraction of the hone tool by the "honetool mechanism as it, ismovedi-n the opposite direction. The sleeve 30 extends beyond the outer end .of shaft ;-I3 fo n a ng co lar The positions of'the sleeve ill :alongthe shaft [3 to effect desired changesof diameter of-the honing "tool are determined by an adjusting mechanism comprising a "lever 32. Iih'e lever 32 is pivoted at. its lowerend one. link '3 3 which in "turn is; ;piv.otally"connected to a "lug "34 at-- tachedpto'theifront wall of the'ghousingl i. *The lever 12 'is l'bifurcated and the tines thereof straddlethe .shaftl3 and sleeve '30, as may be clearly seenin EigLB. HA brackettiispivotally secured between .the lines of the .lever .at the upper .end thereof .and .this bracket .pivotally supports a blockdfi. .'Ihe.blocl 3.6=has-.a threaded penin -.-;ther ein .into hich a thr aded rod :31 issreceived. .all'he rod 31 .is;;rotativel-y :-.:iourna-1-led in an opening through the front wall of the housing and a hand wheel 38 is attached to the outer end of the rod for rotating the latter. It will be seen that as the rod 31 is rotated the lever 32 will be rocked toward or away from the front of the housing, depending upon the direction of rotation of the rod. Preferably, graduations are formed on the edge of the hand wheel, which graduations may cooperate with a suitable indicator on the housing to indicate fine adjustment of the lever position.

The portion of the sleeve 30 intermediate the tines of the lever 32 is enlarged as at 30A and a second sleeve 4|] is telescoped within the enlarged portion 30A of sleeve 30. The sleeve portion 30A has openings 4| formed through opposite sides thereof and pins 42 project from the tines of lever 32 through these openings and are secured to the inner sleeve 40 see Fig. 7. The openings 4| in sleeve 30 are elongated circumferentially of the sleeve and the rearward edges 44 thereof are inclined upwardly rearwardly as viewed in Fig. 4 and constitute cams that cooperate with the pins 42 as follows; when the sleeve is rotated counter-clockwise as viewed in Fig. 3, and in a manner to be described, the said edges 44 cam or force the sleeve to the right along shaft I3, as may be seen in Fig. 6.- The solid lines of Fig. 6 show one of the openings 4| when the sleeve 30 has been rotated as described and the broken lines indicate the position of the opening 4| prior to rotation of the sleeve 3!]. The sleeve 30 may thus be moved rearwardly in the hone contracting direction by rotation of the sleeve, as described, by the camming reaction of the edges 44 upon the pins 42. The rearward'end of the second sleeve 40 has a collar 46 threaded thereon and a compression spring 41 surrounds the sleeve 40 and its opposite ends abut the end of the enlarged sleeve portion 38A and the collar 46, respectively. In the present instance the spring 41 is formed of a series of washers 50 and annular waved spring members arranged alternately. The tension of the spring can be regulated by adjusting the collar 46 on the threaded end of sleeve 40. The collar 46 may be locked in position by a key 52. It will be seen that the spring 41 will urge the sleeve 30 forwardly in the hone tool expanding direction. It will be apparent that the tension of spring 41 should be suflicient to overcome the spring actuated tendency of the honing tool'to contract and that this tension will determine the outward pressure of the honing stones against the piece being honed.

The sleeve 30 is rotated to cammingly move it against the action of spring 41 by a lever 60 which is attached to the sleeve adjacent its outer end. In order to contract the hone tool, the operator need only push'down or depress the lever 68 from the broken line position to the solid line position of Fig. 5, to be referred to, and the sleeve 30 will thereby be rotated and the cam surfaces 44 on the sleeve portion 30A will cooperate with pins 42 to force the sleeve rearwardly and compress the spring 41, thereby permitting the honing tool to contract. In use, when the hone is retracted the work piece can be slipped over the hone. Lever 60 is then restored clockwise rotating the sleeve 30 in the clockwise direction. The sleeve 30 is then urged by the spring 41 to move forwardly to expand the hone tool to engage the work with pressure derived from the spring 41 but the forward movement is yieldingly opposedbythe tooL- As the hone tool abrades the work piece, it will expand under influence of spring 41, and the sleeve 30 will gradually move forward. In the full counter clockwise rotated position of the sleeve, the position of the openings 4| with respect to the pins 42 is that shown in Fig. 6 for one of them. In the full clockwise rotated position of the sleeve, the pin will be in the upper end of the opening 4|, somewhat as shown in Fig. 4; but since at this time, as described above, the sleeve has not yet moved all the way forward, the pin will be forwardly of the cam edge 44. As the sleeve 30 moves forwardly and carries the openings 4| with it, a limit for the sleeve is reached when the cam surfaces 44 engage the pins 42.

The position of the pins 42 thus determines and limits the forward movement of the sleeve 30 and therefore the amount of expansion of the hone tool by the spring. 41, and the final diameter of the hole being honed; and this position is adjustably predetermined by setting the position of the lever 32 by the hand wheel 38 as described. Lever 60 may then be depressed again to rotate the sleeve 30 counter-clockwise and move it rearwardly and release the collar 28 to allow the hone tool to contract to permit easy removal of the work from the hone.

The lever 60, see Fig.5, has two extreme positions at which it is stopped, the broken line and solid line respectively, provided by engagement of the upper and lower ends of the openings 4| with the pins 42, see Fig. 6.

Preferably, as shown in Fig. 6 the opening 4| in the sleeve 30 has a recessed part 6| formed at the lower end of the cam surface 44 so that the edge of the recess will engage the pin 42 when the sleeve is rotated by the lever 60 to the hone contracting position to provide a detent for yieldably holding the sleeve 30 and lever 6|) in that position. 'Recesses 6| may be provided at both openings 4| for both pins 42, one being shown in Fig. 6.

The honing tool may be supplied with cutting oil through a bore 63 in drive shaft l3 and there is an oil pump 64 driven by the motor I6 for supplying oil to the shaft through a pipe 65 and stuffing box 66. Oil is supplied to the pump through pipe 61 which withdraws the oil from a catch basin 63 located beneath the honing tool. 1

It will be apparent that by our invention the mechanism for effecting quick retraction of the honing tool is formed of few parts that can be easily assembled in a compact space.

Although we have shown but one form of the invention, other forms may be adopted, all falling within the scope of the claims which follow.

We claim:

1. In a hone driving machine, a main frame rotatably supporting a. drive shaft, having an end portion provided with means for mounting an expansible honing tool thereon to be rotated thereby coaxially therewith a sleeve reciprocably movable on the shaft axially thereof, andha vingan-end portion adjacent the said end po rtion of the shaft for engagement with expanding mechanism of the hone tool to expand the tool by forward sleeve movement: a positionable member supported by the frame and provided with an abutment and variably positionable on the frame to dispose the abutment in different positions in the longitudinal direction of the sleeve; -manual1y operable adjusting means connected to' the positionable element-to adjustably epit et move it and the abutment therewith with micromet'er movements to dispose tneabutment in correspondin positions and to "fixit in said positio'nsf; a sprin reactin won a portion or the sleeve at all times iirg'in'g the sleeve "to move forwardly toward the end portion or "the shaft; the sleeve havin a stop ,ip'ort'ion 'engageahle With the abutment to terminate said Iro'rw'a'ra sprin u'rged movement; and r'nanuall operable retracting mechanism disposed "to retract the sleeve against the 'force of the spring whenthe'mehanism'is operated'to position "the sleeve for sprin ur eo forward movement.

2. In a hone driving iii'achine, a main frame rotatably supporting a drive shaft, having an end portion provided with "means for mounhn an expansible honing 'toolfthereon to "be rotated thereby coaxially therewith; a sleeve reciprooa'bl movable on the shaft aii'ally thereof, and having an end portion ad acent the said end portion of the shaft for engagement With expanding mechanism of "th'eThohe tool to stipend the tool by forward sleeve :movement; a i o'si tionable member supported -by the frame and provided with an abutment and variabm positionable on the -fra'ine to dispose the abutment in different positions 'in the longitudinal tion of the sleeve; manuall operaoie a'd means connec't'edto the positionahle elenler itfto adjust'ably move it and "the ab with micrometer movements 'Tto 'dlspbse the abut ment in corresponding ositions andto 'fiiit in said positions; a spring reactin upon apor'tlo'n of the positionable element a upon "a portion of 'the sleeve at all "times urging the sleeve fto move forwardly toward the enil'portion o: the shaft; the sleeve'havin' astopportron engageaole with the abu'tment to terminate sard forward spring=urged movement; and manually "operable retracting mechanism disposed to retract the sleeve against the force of the "spring when the mechanism is operated to position the sleeve for spring-urged forward movement.

3. In a hone driving machine, .a main frame rotatably supporting ;a drive shaft, having an end portion provided with means :for mounting an expansible honing tool thereon to be rotated thereby coaxially therewith; a sleevereciprocably movable on the shaft axially thereof, and having an end portion adjacent the said end portion of the shaftfor engagement with expanding mechanism of the -hone 13061 to expand the totfl by forward sleeve movement; a lever, pivotally supported on the "frame at one position -and having an intermediate portion extending transversely "of the sleeve movable longitudinally of the sleeve upon pivotal rocking 'of the l'eve'r; the lever and sleeve provided with abutments, respectively, spaced longitudinally lot :the sleeve, and a springbetween the labutmentszat all times urging the sleeve to moveforwardly toward the end portion of the shaft; a first stop carried by the leverintermediate portion; manually operable adjusting means connected to the lever at another portion and operabl'eto'rock thelever on its pivot to difierent angular .ip'o ons with micrometer movements "to variably "position "the intermediateportionandthe first stop; afse'cond stop'carried by the sleeve"engageablewiththe stop to terminate forw'ard -m'ovement or the sleeve; and manually operable retracting'mecliainism disposed to "retract -the sleeve against"the force-of the spring top'osition it for spr ing urged forward movement. I

-- 14. .In a. honedriving machines msti n fmme 'e'lit therewith rotatably supporting a drive shaft, having an end "portion provided "with means 'fo'r mounting an expansible honing tool --'thereon to be rotated thereby 'coali'al l'y therewith; a sleeve reciproca-bly movable on the shaft axia lly thereof, -'and h'a-vihg an end portion adjacent the said end ortion of the shaft for engagement with expanding mechanism of the hone tool to expand the tool by forward sleeve movement; a lever, 'pivotally supported "on the frame at one ='po"rtion and havihg an -irite'rmediate portion extending transversely of the sleeve movabl'e long itudinally of the sleeve upon pivotal rocking of the lever the lever and-sleeve provided with abutments, respectively, spaced longitudinally of the sleeve, and a spring between the abutments at all times urgin the sleeve to native i-orwardly toward the "end portion of the shat ,ahrststopoarried hy the lever intermediate portion; manually operable adjusting means eonne'cte'd to the lever at another portion and operable to rock the lever on its pivot to different angular positions with micrometer movements t'o variably position the intermediate portion and the first stop; a second'stop carl ied' by the sleeve -"enga'g'eable with the firs't stop to terrifihate forward movement o'fthe sleeve; the sleeve being rotatable on the shaft and a handle eonnected to the sleeve to rotate it; an inclined ea'm surface carried by the sleeve and a-cam fol-lower surface carried by the lever -inter'm'ed'lait'e portion; I the cam surface formed to react -'on the cam follower surface in one "rotary direction or the sleeve to retract the sleeve to a retracted position against opposition by g the spring, and to be removed from the cam follower upon rotary movement in the other =d-ireetion to condition the sleeve for spring-urged forward movement.

In a hone driving machine, a man-1." frar'n'e rotatably supporting a drive shaft having 'anend portion provided with means for mounting an expansible honing tool thereon to be rotated thereby 'coax'ially therewith; a -sleeve rotable on the shaft 'in alternate directions, and a handle connected to "the sleeve to rotate it; and the sleeve being reciprocably movable on the shaft axial-1y thereof and having an end portion adjacent the said *end portion of the shaft for eng'a'g'elne'nt with-ex andin mechanism of th'etool to expand it up'o'n "forward sleeve movement; an element supported on the frame having arm's straddlin the sleeve; a tubular element'proj ecting into the other end of the sleeve; "the sleeve having openings in opposite sides thereof; pins extendin through said openings and -secured at opposite portions to the arms and to the tubular element; the tubular element extending out of the said other end of the sleeve and having a spring abutment thereon spaced from 'the adjacent end of the sleeve; a compression spring reacting at opposite end portion upon the adjacent sleeve end and upon the abutment, at all times urging the sleeve forwardly; edges atone side of the said openings in the sleeve constituting cam surfaces engaged with thevpins by said action of said spring, and formed to react .on the pins to effect rearward movement of the sleeve in opposition to said spring upon rotation of :the sleeve in one "direction. and to be removed from the pins upon rotation :of the sleeve in the other direction to :condition the sleeve ;for forward movement. 1

'6. In fa hone idrivingtrmachine, a main :frame rotatablyisupporting i a 'drive shaft having :an :end portion (provided with meansfor :mountingsan expansible honing tool thereon to be rotated thereby coaxially therewith; a sleeve rotable on the shaft in alternate directions, and a handle connected to the sleeve to rotate it; and the sleeve being reciprocably movable on the shaft axially thereof and having an end portion adjacent the said end portion of the shaft for engagement with expanding mechanism of the tool to expand it upon forward sleeve movement; an element supported on the frame having arms straddling the sleeve; a tubular element projecting into the other end of the sleeve; the sleeve having openings in opposite sides thereof; pins extending through said openings and secured at opposite portions to the arms and to the tubular element; the tubular element extending out of the said other end of the sleeve and having a spring abutment thereon spaced from the adjacent end of the sleeve; a compression spring reacting at opposite end portions upon the adjacent sleeve end and upon the abutment, at all times urging the sleeve forwardly; edges at one side of the said openings in the sleeve constituting cam surfaces engaged with the pins by said action of said spring, and formed to react on the pins to effect rearward movement of the sleeve in opposition to said spring upon rotation of the sleeve in one direction, and to be removed from the pins upon rotation of the sleeve in the other direction to condition the sleeve for forward movement, the support on the frame for the said arms being a pivot support positioned for movement of the pins longitudinally of the sleeve upon pivotal movement of the arms; manually operable adjusting means connected to the arms to pivotally move them and fix them in selected positions to selectively position the pins; the pins and said opening edges constituting stops mutually engaged by forward spring-effected movement of the sleeve to selectively predetermine the extent of sleeve movement.

7. A machine for driving an adjustable hone tool of the type comprising honing stones mounted for rotation around an axis, and means to mount the tool coaxial with a drive shaft to rotate it, and axially movable means to adjustably expand the tool diameter and spring means to contract it; the machine comprising: a frame rotatably supporting a drive shaft having a free end provided with means to mount the tool thereon; a hone-tool adjusting machine element extending forwardly and rearwardly longitudinally of the shaft, and having a forward end portion adjacent to the shaft end, and mounted in the machine for forward and rearward reciprocatory movement of the forward end portion in the longitudinal direction of the shaft, to engage the forward end portion with the axially movable means of the tool to expand the tool upon forward movement of the forward end portion and to allow the tool to contract upon rearward movement of the forward end portion; spring means in the machine arranged to react on the machine element at all times to urge the said forward end portion to move forwardly; a stationary support thereof to different selected positionsto dispose the camming element carried thereby in corresponding selected positions; and a first manual able to move it to selected positions and to fix it in' said positions; the said camming elements disposed to be held in mutual engagement by said spring reaction; the machine element mounted in the machine also for reciprocatory movement of the rearward portion in two directions at an angle to the forward and rearward direction; a second manual means connected to the machine element, operable to move the rearward portion in one of said second directions, and the camming elements formed to then effect movement of the machine element against opposition by the spring to move the forward end portion rearwardly; and the manual means operable to restore the rearward portion in the other of said second directions and to thereby cause the spring to move the machine element, to move the forward portion thereof in the forward direction.

4 8. A machine for driving an adjustable hone tool of the type comprising honing stones mounted for rotation around an axis and means to mount the tool coaxial with a drive shaft to rotate it, and axially movable means to adjustably expand the tool diameter and spring means to contract it; the machine comprising: a frame rotably supporting a drive shaft having a free end provided with means to mount the tool thereon; a hone-tool adjusting machine element extending forwardly and' rearwardly longitudinally of the shaft, and having a forward end portion adjacent to the'shaft end, and mounted in the machine for forward and rearward reciprocatory movement of the forward end portion in the longitudinal direction of the shaft, to engage the forward end portion with the axially movable means of the tool to expand the tool upon forward movement of the forward end portion and to allow the tool to contract upon rearward movement of the forward end portion; spring means in the machine arranged to react on the machine element at all times to urge the said forward end portion to move forwardly; a stationary support mounted on the frame; a pair of camming elements, one being a cam and the other a cam follower, and one being carried by a rearward portion of the machine element and the other carried by the stationary support; the mounting of the stationary support constructed for movement thereof to different selected positions to dispose the camming element carried thereby in corresponding selected positions; and a first manual means connected to the stationary support operable to move it to selected positions and to fix it in said positions; the said camming elements disposed to be held in mutual engagement by said spring reaction; the machine element mounted in the machine also for reciprocatory movement of the rearward portion in two directions at an angle to the forward and rearward direction; a second manual means connected to the machine element, operable to move the rearward portion in one of said second directions, and the camming elements formed to then effect movement of the machine element against opposition by the spring to move theforward end portion rearwardly; and the manual means operable to restore the rearward portion in the other of said second directions'and to thereby cause the spring to move the machine element, to move the forward portion thereof in the forward direction; the spring effected en agement of the camming element carried by the rearward portion with the cammeans connected to the stationary support ,operg 76 ming, element, carried, by the stationary support,

constituting a stop limiting forward movement of Number the forward portion. 2,070,381 JACK F. SMOLE. 2,155,072 JOSEPH F. SMOLE. 2,321,421 5 2,350,527 REFERENCES CITED 2 353,247 The following references are of record in the 2,377,538 file of this patent:

UNITED STATES PATENTS 10 Number Number Name Date 7,892 1,072,116 Hartman Sept. 2, 1913 359 430 1,978,712 Kern Oct. 30, 1934 Name Date Sunnen Feb. 9, 1937 Zimmerman Apr. 18, 1939 Rickenmann June 8, 1943 Peden June 6, 1944 Palotsee Sept. 12, 1944 Sunnen June 5, 1945 FOREIGN PATENTS Country Date Great Britain Mar. 29, 1911 Germany Sept. 23, 1922 

